Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival brings an average high-temperature of a still tropical 88.3°F (31.3°C), slightly deviating from August's 93.2°F (34°C). The temperature in Grayburg lowers to an average of 71.1°F (21.7°C) during September nights.Heat index
For most parts of September, the heat index is computed to be a scorching 105.8°F (41°C). Greater preventive actions are needed, heat exhaustion and heat cramps are likely. Persistent activity could provoke heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', evaluates the perceived heat by adding the effect of moisture in the air. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children typically face more danger than adults as their sweat production is usually lower. Additionally, the bigger skin surface compared to their small size and the increased heat due to their activeness exacerbate the risk.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Excessive heat that's not properly managed leads to increased body temperatures and resultant health issues.
Humidity
In Grayburg, the average relative humidity in September is 77%.Rainfall
In Grayburg, in September, it is raining for 17.5 days, with typically 3.7" (94mm) of accumulated precipitation. Throughout the year, in Grayburg, Texas, there are 174.4 rainfall days, and 35.67" (906mm) of precipitation is accumulated.Snowfall
In Grayburg, snow does not fall in February through December.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 6:54 am and sunset at 7:39 pm. On the last day of September, sunrise is at 7:10 am and sunset at 7:03 pm CDT.
Sunshine
The average sunshine in September in Grayburg is 9.2h.UV index
In Grayburg, the average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 6 in September interprets into the following advice:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Grayburg in September?
What is the average humidity in September in Grayburg?
How much does it rain in Grayburg in September?
When it does not snow in Grayburg?
How many hours of daylight does Grayburg have in September?
When are sunrise and sunset in September in Grayburg?
How long on average sun shines in September in Grayburg?
How high is the UV index in September in Grayburg?
Average temperature in September
Grayburg, TX
- Average high temperature in September: 88.3°F
The warmest month (with the highest average high temperature) is August (93.2°F).
The month with the lowest average high temperature is January (59.5°F).
- Average low temperature in September: 71.1°F
The month with the highest average low temperature is July (75.6°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in September
Grayburg, TX
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Grayburg, TX
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).
Average humidity in September
Grayburg, TX
- Average humidity in September: 77%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Grayburg, TX
- Average rainfall in September: 3.7"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is February (2.05").
Average rainfall days in September
Grayburg, TX
- Average rainfall days in September: 17.5 days
The month with the highest number of rainy days is August (17.8 days).
The months with the least rainy days are January and November (12.3 days).
Average snowfall in September
Grayburg, TX
- Average snowfall in September: 0"
The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in September
Grayburg, TX
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
Grayburg, TX
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in September: 9h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Grayburg, TX
- Average sunshine days in September: 11.3 days
The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are February and June (11.1 days).
Average UV index in September
Grayburg, TX
- Average UV index in September: 6
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in September
Grayburg, TX
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are August and October (Cloud cover 29).
Average visibility in September
Grayburg, TX
- Average visibility in September: 5mi
The months with the highest visibility are January, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are February, March, April and September (5mi).
Grayburg, Texas, USA
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